<template>
  <!-- 
    v-model控制显示与否
    :before-close 是关闭前的回调
  -->
  <PanelHead :route="route"></PanelHead>
  <div class="btns">
    <el-button :icon="Plus" type="primary" @click="open(null)" size="small">新增</el-button>
  </div>
  <el-table :data="tableData.list" style="width: 100%;">
    <el-table-column prop="id" label="id" />
    <el-table-column prop="name" label="昵称" />
    <el-table-column prop="permissionName" label="菜单权限" width="500px"/>
    <el-table-column label="操作">
      <template #default="scope">
        <el-button type="primary" @click="open(scope.row)">编辑</el-button>
      </template>
    </el-table-column>
  </el-table>
  <div class="pagination-info">
    <el-pagination
      v-model:current-page="paginationData.pageNum"
      :page-size="paginationData.pageSize"
      :background="false"
      size="small"
      layout="total, prev, pager, next"
      :total="tableData.total"
      @size-change="handleSizeChange"
      @current-change="handleCurrentChange"
    />
  </div>
  <el-dialog
    v-model="dialogFormVisable"
    :before-close="beforeClose"
    title="添加权限"
    width="500"
  >
    <el-form
      ref="formRef"
      label-width="100px"
      label-position="left"
      :model="form"
      :rules="rules"
    >
      <el-form-item v-show="false" prop="id">
        <el-input v-model="form.id"></el-input>
      </el-form-item>
      <el-form-item label="名称" prop="name">
        <el-input v-model="form.name" placeholder="请填写权限名称"></el-input>
      </el-form-item>
      <el-form-item label="权限" prop="permissions">
        <el-tree
          ref="treeRef"
          style="max-width: 600px;"
          :data="permissionData"
          node-key="id"
          show-checkbox
          :default-checked-keys="defaultKeys"
          :default-expanded-keys="[2]"
        >

        </el-tree>
      </el-form-item>
    </el-form>
    <template #footer>
      <div class="dialog-footer">
        <el-button  type="primary" @click="confirm(formRef)">确认</el-button>
      </div>
    </template>
  </el-dialog>
</template>

<script setup>
import { nextTick, onMounted, reactive, ref } from 'vue';
import { userGetmenu, userSetmenu, menuList } from '../../../api'
import { Plus } from '@element-plus/icons-vue'
import { useRoute } from 'vue-router';

const route = useRoute()

// 控制弹窗的显示与隐藏
const dialogFormVisable = ref(false)

// form的数据
const form = reactive({
  id:'',
  name: '',
  permissions:''
})

//树形菜单权限数据
const permissionData = ref([])

// 选中权限
const defaultKeys = [4, 5]

// 获取树形菜单实例
const treeRef = ref()
// 表单实例
const formRef = ref()

const paginationData = reactive({
  pageNum:1,
  pageSize:10
})
// 分页页面回调
const handleSizeChange = (val) => {
  paginationData.pageSize = val
  getListData()
}
const handleCurrentChange = (val) => {
  paginationData.pageNum = val
  getListData()
}

// 表格中的编辑，打开弹窗
const open = (rowData) => {
  dialogFormVisable.value = true
  // form弹窗打开，生成是异步的
  nextTick(() => {
    if (rowData) {
      Object.assign(form, { id: rowData.id, name: rowData.name })
      treeRef.value.setCheckedKeys(rowData.permission)
    }
  })
}

// 请求列表数据
const getListData = () => {
  menuList(paginationData).then(({ data }) => {
    const { list, total } = data.data
    tableData.list = list
    tableData.total = total
  })
}

onMounted(() => {
  // 菜单数据
  userGetmenu().then(({ data }) => {
    // console.log(data,'userGetmenu')
    permissionData.value = data.data
  })
  getListData()
})

// 列表数据
const tableData = reactive({
  list: [],
  total:0
})

const rules = reactive({
  name:[{required:true, trigger:'blur', message:'请输入权限名称'}]
})
// 表单提交
const confirm = async (formEl) => {
  if (!formEl) return
  await formEl.validate((valid, fields) => {
    if (valid) {
      // 获取到选择的checkbox数据
      const permissions = JSON.stringify(treeRef.value.getCheckedKeys())
      userSetmenu({ name: form.name, permissions, id: form.id }).then(({ data }) => {
        // console.log(data)
        beforeClose()
        getListData()
      })
    } else {
      console.log('error submit!', fields)
    }
  })
}

// 关闭弹窗的回调
const beforeClose = () => {
  dialogFormVisable.value = false
  // 重置表单
  formRef.value.resetFields()
  // tree选择重置
  treeRef.value.setCheckedKeys(defaultKeys)
}
</script>

<style lang='less' scoped>
.btns{
  padding: 10px 0 10px 10px;
  background-color: #fff;
}
</style>